Windows 7: Audio Problem with Intel G41

Hello,

First, here are my pc specifications:


I'm facing a problem with audio, it's not working although I have installed all the drivers including the audio driver which is the latest one from Realtek. What can I do to fix this issue?





By the way, I had another motherboard, and the sound was working perfectly. Do you advice me to change the new motherboard (g41)? if so, what do you think is the best one to fit my pc?

Thanks in advance